Device for feeding fine fuel



(No Modell) A. GREINER.

Device for Feeding Fine Puel.

NO. 238,891. 'Patented March 15,1881.

WITNESSES: Ii l INVENTOR:

' ATTDRNBYS.

N PETERS. FHUTO-LITHUGRAPMER. WASHINGTON. D. Cy

tss

' UNITED STATES AUGUSTUS GEEINEE,

PATENT OFFICE.

OF SOMERSET, OHIO.

DEVICEFOR FEEDING FINE FUEL.

SPECIFICATION forming partrof Letters Patent No. 238,891, dated March 15, 1881. Application filed December 3, 1880. (No model.)

To all whom 'it may concern:

Beit known that I, AUGUSTUS GEEINEE, of Somerset, in the county of Perry and State of Ohio, have invented a new and Improved Device for Feeding Fille Fuel, of which the following is a full, clear, and exact description.

The object of this invention is to economize in the quantity of fuel used, and to use cheaper fuel for furnaces, forges, &c.

The drawing represen ts a vertical sectional elevation ot' the apparatus for containing the supply of coaldust.

In the drawing, A represents a hollow cylindrical vessel having conical ends c c, and in the upper end a suitable door, B, for the introduction of the coal-dust.

Connected with a central opening. b, in the lower end of the vessel A is a pipe, C, for the admission of the forced current of air or steam into the said vessel A, said pipe O being provided with a suitable regulating valve or cock, D. y

Connected with a central opening, c, in the upper end of the vessel A is apipe, E, for conducting the coal-d ustladen current or jet of air or steam to the furnace or tire for which it is designed.

F represents a quantity of coal-dust in the vessel A.

It is designed to arrange the vessel A between a source of steam or air pressure and the furnace or lire-box to be supplied with fuel, and to make suitable connections therewith. Coal-dust is then introduced into the vessel A through the door B, which latter is afterward tightly closed in order to prevent the escape of air, steam, or coal-dust. A suitable tire is then built in the furnace or tre-boX,and when the walls ot' said furnace or re-box have become heated to some extent the blast of air or jet of superheated steam is applied through the pipe O and opened valve D up through the coa-l dust in the vessel A, and in passing through the vessel A the air or steam column takes up a quantity of the coal-dust F and car- 4 ries it through the pipe E into the heated furnace or re-box, wherein it is ignited by the tire there and burned with a rapidity and intensity proportioned to the degree ofineness to which it (the said coal-dust) is reduced. If the coal be very finely comminuted it will take re in the furnace or fire-box and burn like a jet of gas, and if the coal be introduced into the furnace by ajet of steam the steam will be decomposed by the incandescent floating particles of cai-bon, and thereby supply .additional oxygen to thecarbon, and also furnish hydrogen for combustion.

With a continuous supply of air or steam borne dust coal ot' suitable tneness a furnace or're-box will require little or no other fuel after the walls thereof have become thoroughly heated. p

In this process line coals that are otherwise almost useless as fuel canl be used, and such coals can be obtained at much less cost than lthose of ordinary commercial grades; and,

further, it is found that complete combustion is assured with air or steam borne coal of suflcient fineness; hence the combustion of the lfuel is attended with a higher temperature Y than in the usual methods of burning coal, and

is characterized by an entire absence of smoke. Having thus described my invention, I claim as new and desire to secure by Letters Patent- An apparatus for feeding coal-dust to furnaces, consisting of an airtight coal-dust vessel provided at one end with an inlet adapted to be connected with an air or steam supply, and at the other end with an outlet adapt-ed to be connected directly with the furnace, as shown and described.

AUGUSTUS vGREINER. Witnesses:

MINNIE GREINEE, LoUIs GEEINEE. 

